Fairmont Federal Credit Union Data Breach: 187,000 Affected by 2023 Cyberattack

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## **TL;DR**
- **Fairmont Federal Credit Union (FFCU)** disclosed a **2023 data breach** that exposed the **personal, financial, and medical data** of **187,038 members**.
- The breach, linked to the **Black Basta ransomware group**, occurred between **September 30 and October 18, 2023**, but was only discovered in **January 2024**.
- FFCU has offered **free credit monitoring and identity protection services** to affected individuals, though no fraud has been reported to date.

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## **Fairmont Federal Credit Union Data Breach: What Happened?**

Fairmont Federal Credit Union (FFCU), a **not-for-profit financial cooperative** based in **West Virginia**, recently alerted **187,038 members** that their sensitive data was compromised in a **2023 cyberattack**. The breach exposed a **wide range of personal, financial, and medical information**, raising concerns about potential identity theft and fraud.

### **Discovery and Investigation Timeline**
- **Breach Period**: The unauthorized access occurred between **September 30 and October 18, 2023**.
- **Discovery**: FFCU detected the breach in **January 2024**.
- **Investigation Completion**: The investigation concluded on **August 17, 2025**, confirming the exposure of sensitive data.

According to the [data breach notification letter](https://cdn.firstbranchcms.com/kcms-doc/163/91576/FFCU-Website-Substitute-Notice-April-28-2025-35873074.1.pdf) sent to affected individuals, the compromised information may include:

- **Personal Identifiers**:
  - Full name
  - Date of birth
  - Address
  - Social Security number (SSN)
  - U.S. Alien registration number
  - Passport number
  - Driver’s license or state ID number
  - Military ID number
  - Tax ID number

- **Financial Data**:
  - Financial account number
  - Routing number
  - Financial institution name
  - Credit/debit card number
  - Security code/PIN number
  - Credit/debit card expiration date
  - IRS PIN number

- **Medical Information**:
  - Treatment information/diagnosis
  - Prescription information
  - Provider name
  - Medical Record Number (MRN)/patient ID
  - Medicare/Medicaid number
  - Health insurance policy/subscriber number
  - Treatment cost information

- **Digital Credentials**:
  - Full access credentials
  - Security questions and answers
  - Digital signatures

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## **Response and Mitigation Efforts**
FFCU has **not reported any cases of fraud** linked to the breach. However, to mitigate risks, the organization has taken the following steps:

1. **Free Credit Monitoring**: Starting **September 11, 2025**, FFCU offered **complimentary access to Experian IdentityWorksSM** for **12 or 24 months** to members whose SSNs were exposed.
2. **Guidance and Support**: Affected individuals received **detailed guidance** on protecting their identities and monitoring their accounts.
3. **Encouragement for Vigilance**: FFCU urged members to **stay alert** for suspicious activity and report any potential fraud immediately.

> *"To date, we are not aware of any reports of identity fraud as a direct result of this incident. Nevertheless, in response to the incident, we are offering complimentary access to Experian IdentityWorksSM for 12 or 24 months."* — [Data Breach Notification](https://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/75c92a2c-3791-47c6-84f7-87b34fab952d.html)

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## **Black Basta Ransomware Group: The Culprit**
While FFCU did not disclose technical details about the attack, the **Black Basta ransomware group** claimed responsibility for the breach. Black Basta, a **ransomware-as-a-service (RaaS)** operation, has been active since **April 2022** and has targeted **over 500 organizations worldwide**.

### **Key Facts About Black Basta**
- **Target Sectors**: The group has impacted **12 critical infrastructure sectors**, including **healthcare, public health, and financial services**.
- **Global Reach**: Victims span **North America, Europe, and Australia**.
- **Government Response**: In **May 2024**, the **FBI, CISA, HHS, and MS-ISAC** issued a [joint Cybersecurity Advisory (CSA)](https://securityaffairs.com/163019/cyber-crime/black-basta-ransomware-500-organizations.html) to warn organizations about Black Basta’s **tactics, techniques, and procedures (TTPs)**.
- **Internal Conflicts**: In **February 2025**, [leaked chat logs](https://securityaffairs.com/174547/cyber-crime/leaked-black-basta-chat-logs-reveal-internal-conflicts.html) revealed **internal disputes** within the group, exposing member details and hacking tools.

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## **Why This Breach Matters**
The FFCU data breach highlights the **growing threat of ransomware attacks** on financial institutions and the **importance of proactive cybersecurity measures**. With **sensitive personal and financial data** at risk, organizations must:
- **Strengthen their defenses** against evolving cyber threats.
- **Implement robust monitoring systems** to detect breaches early.
- **Provide timely support** to affected individuals to prevent identity theft and fraud.

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## **Conclusion**
The **Fairmont Federal Credit Union data breach** serves as a stark reminder of the **persistent and evolving cyber threats** facing financial institutions. While FFCU has taken steps to **mitigate risks** and support affected members, the incident underscores the need for **heightened cybersecurity awareness** and **proactive defense strategies**.

For now, affected individuals are encouraged to **monitor their accounts closely** and take advantage of the **free credit monitoring services** offered by FFCU. As cybercriminals continue to refine their tactics, organizations must remain **vigilant and adaptive** to protect sensitive data.

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## **Additional Resources**
For further insights on ransomware and cybersecurity best practices, explore these resources:
- [FBI’s StopRansomware Initiative](https://www.cisa.gov/stopransomware)
- [CISA’s Cybersecurity Advisories](https://www.cisa.gov/)
- [Experian IdentityWorks](https://www.experian.com/identityworks/)